CN114438385A - Preparation method of metal titanium particle reinforced magnesium-based composite material - Google Patents
Preparation method of metal titanium particle reinforced magnesium-based composite material Download PDFInfo
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- CN114438385A CN114438385A CN202210107168.7A CN202210107168A CN114438385A CN 114438385 A CN114438385 A CN 114438385A CN 202210107168 A CN202210107168 A CN 202210107168A CN 114438385 A CN114438385 A CN 114438385A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/001—Extruding metal; Impact extrusion to improve the material properties, e.g. lateral extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
Abstract
The invention discloses a preparation method of a metal titanium particle reinforced magnesium-based composite material, which mainly solves the problems that metal titanium particles are difficult to add, the dispersion is uneven, and the comprehensive mechanical property of the magnesium-based composite material is poor. The magnesium alloy is melted in a stirring device filled with carbon dioxide and sulfur hexafluoride protective gas, and then the titanium particle prefabricated body or the titanium particle lamination layer coated by the aluminum foil is added, so that the burning loss of the titanium particles can be avoided. And then mechanical stirring, ultrasonic treatment and rapid cooling are applied, so that the titanium particles can be uniformly dispersed, and the sedimentation of the titanium particles is avoided. Finally, the titanium particle reinforced magnesium-based composite material is subjected to hot extrusion deformation, and the titanium particles are further dispersed. The titanium particles can prevent the crystal grain size from growing in the hot extrusion deformation process, and simultaneously, the strength and the plasticity of the composite material are improved. The titanium particles can weaken the basal plane texture of the composite material, and the plasticity of the composite material is effectively improved. Compared with a matrix alloy, the magnesium-based composite material prepared by the method has higher strength and plasticity.
Description
Technical Field
The invention relates to the technical field of magnesium-based composite materials, in particular to a preparation method of a metal titanium particle reinforced magnesium-based composite material.
Background
The magnesium-based composite material has the advantages of high specific strength, high elastic modulus, good wear resistance and the like. Has wide application prospect and value in the fields of automobiles, war industry and aerospace. At present, the preparation of the magnesium-based composite material has two difficulties, which greatly limits the development of the magnesium-based composite material. The interface bonding between the reinforcing phase and the magnesium matrix is poor; secondly, the reinforcement is difficult to disperse in the magnesium matrix.
The commonly used reinforcing phase of the magnesium-based composite material comprises ceramic particles such as silicon carbide, aluminum oxide, boron carbide, titanium carbide and the like. The introduction of the ceramic particles can obviously improve the strength, hardness and wear resistance of the magnesium-based composite material. However, due to the brittle nature of the ceramic particles and poor wettability with the magnesium matrix, the ceramic particles can greatly impair the plasticity of the magnesium-based composite material. Metals possess good plasticity compared to ceramics. The metal particles are used as the reinforcement to improve the plasticity of the magnesium-based composite material. Among them, titanium has excellent strength and is expected to improve the mechanical properties of the magnesium-based composite material. The titanium and the magnesium are in a close-packed hexagonal structure, and the titanium and the magnesium have good wettability, so that the titanium particle reinforced phase and the magnesium matrix have good interface bonding, and the load is transferred from the magnesium matrix to the titanium particles. Thereby preparing the magnesium-based composite material with both strength and plasticity.
Titanium particles are chemically reactive and are not only susceptible to oxidation at high temperatures, but also can burn. Not only is the potential safety hazard easily caused, but also the content of titanium particles is lower than the design requirement. Titanium has a higher density than magnesium, and tends to cause titanium particles to settle in a magnesium melt, resulting in uneven dispersion of titanium particles.
Therefore, how to burn off the titanium particles and improve the titanium particle dispersibility becomes the key to obtain the high-performance magnesium-based composite material.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method for preparing a magnesium-based composite material reinforced by titanium metal particles; the other purpose of the invention is to provide a magnesium-based composite material reinforced by metal titanium particles.
In order to achieve the purpose, the invention provides the following technical scheme:
1. a preparation method of a metal titanium particle reinforced magnesium matrix composite material specifically comprises the following steps:
(1) stirring, casting and forming: adding a titanium particle prefabricated body or a titanium particle laminated layer coated by an aluminum foil into a magnesium melt, preserving heat for 5-10 min, cooling to form a semi-solid magnesium melt, stirring for 5-20 min, heating to form a liquid magnesium melt, performing ultrasonic treatment, and cooling by water to obtain an as-cast titanium particle reinforced magnesium-based composite material;
(2) and (3) hot extrusion molding of the composite material: preheating the as-cast titanium particle reinforced magnesium-based composite material in the step (1) and then extruding to obtain the metal titanium particle reinforced magnesium-based composite material.
Preferably, the titanium particle preform in the step (1) is prepared according to the following method: and carrying out mechanical ball milling on the titanium particles and the magnesium chips under the protection of argon to obtain mixed powder of the titanium particles and the magnesium chips, and carrying out cold press molding.
Preferably, the granularity of the titanium particles is 70 nm-50 microns, the granularity of the magnesium chips is 50-100 microns, and the mass ratio of the titanium particles to the magnesium chips is 1: 1-1: 5;
the specific conditions of the mechanical ball milling are as follows: stainless steel balls with the diameter of 5mm are used as grinding balls, the ball-material ratio is 5-10: 1, the rotating speed during ball milling is 80rmp, and the ball milling time is 60-120 min.
Further preferably, the specific method of cold press molding is as follows: and (3) carrying out cold press molding under the pressure of 100-200 MPa and under the pressure maintaining condition for 0.5-2 min to obtain a prefabricated body of the pre-dispersed titanium carbide particles.
Preferably, the aluminum foil-coated titanium particle laminate in the step (1) is prepared according to the following method: the titanium particles with the particle size of 70 nm-50 mu m are evenly paved on an aluminum foil and then are folded into a slender strip.
Further preferably, the thickness of the aluminum foil is 0.01-0.02 mm, the width of the aluminum foil is 200-300 mm, and the thickness of titanium particles flatly paved on the aluminum foil is 0.2-0.5 mm.
Preferably, the temperature for forming the liquid magnesium melt in the step (1) is 660-750 ℃, the temperature for forming the semi-solid magnesium melt is 600-630 ℃, the time for ultrasonic treatment is 5-20 min, and the power for ultrasonic treatment is 500-2000W.
Preferably, the mass ratio of the titanium particles to the magnesium melt in the titanium particle preform or the titanium particle lamination coated with the aluminum foil in the step (1) is 1: 999-100: 900.
Preferably, the extrusion temperature in the step (2) is 300-350 ℃, the extrusion ratio is 10-25: 1, and the extrusion speed is 0.5-1 m/s.
2. The metal titanium particle reinforced magnesium matrix composite material prepared according to the preparation method.
The invention has the beneficial effects that:
1. the invention discloses a preparation method of a metal titanium particle reinforced magnesium-based composite material, which adds titanium particles into a magnesium melt in a titanium particle prefabricated body or aluminum foil coated titanium particle lamination mode, and can avoid burning loss of the titanium particles in the adding process; the preparation method can effectively disperse titanium particles by applying mechanical stirring and ultrasonic treatment to the magnesium-based composite material melt added with the prefabricated body; in addition, the preparation method can rapidly cool the magnesium-based composite material melt after ultrasonic treatment, so that the sedimentation of titanium particles can be avoided. The titanium particles can be further dispersed by hot extrusion of the as-cast titanium particle reinforced magnesium-based composite material, and the titanium particles can prevent the size of the dynamic recrystallization grains from growing in the hot extrusion deformation process, so that the mechanical property of the composite material is improved; the titanium particles can weaken the basal plane texture of the composite material, and the plasticity of the composite material is effectively improved. Compared with a matrix alloy, the magnesium-based composite material prepared by the invention has higher strength and plasticity, wherein the yield strength can reach more than or equal to 235MPa, the tensile strength is more than or equal to 298MPa, and the elongation rate exceeds 18%.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
FIG. 1 is a microstructure view of a titanium particle-reinforced Mg-based composite prepared in example 1;
FIG. 2 is a microstructure view of a titanium particle-reinforced Mg-based composite prepared in example 2;
FIG. 3 is a microstructure view of a titanium particle-reinforced Mg-based composite prepared in example 3;
FIG. 4 is a microstructure view of a titanium particle reinforced Mg-based composite prepared in example 4;
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Example 1
A preparation method of a titanium particle reinforced magnesium matrix composite material comprises the following steps:
(1) preparing a titanium particle preform: weighing 1g of titanium particles with the average particle size of 80nm and 4g of magnesium chips with the average particle size of 75 microns, putting the titanium particles and the magnesium chips into a stainless steel ball-milling tank, adding 25g of stainless steel balls, repeatedly vacuumizing, flushing argon for 3 times, ball-milling for 90min under the protection of argon, ball-milling at the rotating speed of 80rmp, sieving the ball-milled mixture to obtain mixed powder of the titanium particles and the magnesium chips, placing the mixed powder into a cold-pressing die, and carrying out cold press molding under the pressure of 150MPa to obtain a titanium particle preform;
(2) stirring, casting and forming: SF at a volume ratio of 1:996And CO2Under the protection of gas, 995g of AZ31B magnesium alloy ingot is placed in a crucible to be melted, 5g of titanium particle preform obtained in the step (1) is added into a magnesium melt, the temperature is kept for 10min, then the temperature is reduced to 630 ℃ to form a semi-solid magnesium melt, mechanical stirring is carried out for 10min, then the temperature is increased to 660 ℃, then ultrasonic treatment is carried out for 10min (the ultrasonic power is 1500W), and water cooling is carried out after the ultrasonic treatment is finished to obtain the as-cast titanium particle reinforced magnesium-based composite material;
(3) and (3) hot extrusion molding of the composite material: preheating the cast titanium particle reinforced magnesium matrix composite material prepared in the step (2) at 350 ℃ for 1h, and extruding at 350 ℃ (the extrusion ratio is 25:1, the extrusion rate is 1m/s) to obtain the metal titanium particle reinforced magnesium matrix composite material.
Example 2
A preparation method of a titanium particle reinforced magnesium matrix composite material comprises the following steps:
(1) preparing a titanium particle preform: weighing 2g of titanium particles with the average particle size of 80nm and 8g of magnesium chips with the average particle size of 75 microns, filling the titanium particles and the magnesium chips into a stainless steel ball-milling tank, adding 50g of stainless steel balls, repeatedly vacuumizing, flushing argon for 3 times, ball-milling for 90min under the protection of argon, ball-milling at the rotating speed of 80rmp, sieving after ball-milling to obtain mixed powder of the titanium particles and the magnesium chips, placing the mixed powder into a cold-pressing die, and carrying out cold press molding under the pressure of 150MPa to obtain a titanium particle preform;
(2) stirring, casting and forming: SF at a volume ratio of 1:996And CO2Under the protection of gas, 990g of AZ31B magnesium alloy ingot is placed into a crucible to be melted, 10g of titanium particle preform obtained in the step (1) is added into a magnesium melt, the temperature is kept for 10min, then the temperature is reduced to 630 ℃ to form a semi-solid magnesium melt, mechanical stirring is carried out for 10min, then the temperature is increased to 660 ℃, ultrasonic treatment is carried out for 10min (the ultrasonic power is 1500W), and water cooling is carried out after the ultrasonic treatment is finished to obtain the as-cast titanium particle reinforced magnesium-based composite material; (ii) a
(3) And (3) hot extrusion molding of the composite material: preheating the cast titanium particle reinforced magnesium matrix composite material prepared in the step (2) at 350 ℃ for 1h, and extruding at 350 ℃ (the extrusion ratio is 25:1, the extrusion rate is 1m/s) to obtain the metal titanium particle reinforced magnesium matrix composite material.
Example 3
A preparation method of a titanium particle reinforced magnesium matrix composite material comprises the following steps:
(1) preparing an aluminum foil coated titanium particle lamination: weighing 30g of titanium particles with the average particle size of 8 mu m, paving the titanium particles on an aluminum foil with the width of 250mm, rolling the aluminum foil along one side of the aluminum foil with the width of 5mm at a time, finally rolling the aluminum foil into a strip, and slightly pressing air to obtain an aluminum foil coated titanium particle lamination;
(2) stirring, casting and forming: SF at a volume ratio of 1:996And CO2Under the protection of gas, 970g of AZ31B magnesium alloy ingot is placed in a crucible to be melted, titanium particles coated by aluminum foil containing 30g of titanium particles obtained in the step (1) are added into a magnesium melt at 630 ℃ in a laminated mode, the temperature is kept for 10min, then the temperature is reduced to 630 ℃ to form a semi-solid magnesium melt, mechanical stirring is carried out for 10min, then the temperature is increased to 660 ℃, then ultrasonic treatment is carried out for 10min (the ultrasonic power is 1500W), and water cooling is carried out after the ultrasonic treatment is finished, so that the as-cast titanium particle reinforced magnesium-based composite material is obtained;
(3) and (3) hot extrusion molding of the composite material: preheating the cast titanium particle reinforced magnesium matrix composite material prepared in the step (2) at 350 ℃ for 1h, and extruding at 350 ℃ (the extrusion ratio is 25:1, and the extrusion rate is 1m/s) to obtain the metal titanium particle reinforced magnesium matrix composite material.
Example 4
A preparation method of a titanium particle reinforced magnesium matrix composite material comprises the following steps:
(1) preparing an aluminum foil coated titanium particle lamination: weighing 60g of titanium particles with the average particle size of 8 mu m, paving the titanium particles on an aluminum foil with the width of 250mm, rolling the aluminum foil along one side of the aluminum foil with the width of 5mm at a time, finally rolling the aluminum foil into a strip, and slightly pressing air to obtain an aluminum foil coated titanium particle lamination;
(2) stirring, casting and forming: SF at a volume ratio of 1:996And CO2Under the protection of gas, 930g of an AZ31B magnesium alloy ingot was placed in a crucible and melted. Then adding the titanium particle lamination layer coated by the aluminum foil containing 60g of the titanium particles obtained in the step (1)Keeping the temperature of the magnesium melt at 630 ℃ for 10min, cooling to 630 ℃ to form a semi-solid magnesium melt, mechanically stirring for 10min, then heating to 660 ℃, then carrying out ultrasonic treatment for 10min (the ultrasonic power is 1500W), and carrying out water cooling after the ultrasonic treatment is finished to obtain an as-cast titanium particle reinforced magnesium matrix composite;
(3) and (3) hot extrusion molding of the composite material: preheating the cast titanium particle reinforced magnesium matrix composite material prepared in the step (2) at 350 ℃ for 1h, and extruding at 350 ℃ (the extrusion ratio is 25:1, the extrusion rate is 1m/s) to obtain the metal titanium particle reinforced magnesium matrix composite material.
Performance testing
The microstructure characteristics of the titanium particle reinforced magnesium-based composite materials prepared in examples 1 to 4 were tested, and the microstructure structures of the corresponding titanium particle reinforced magnesium-based composite materials are shown in fig. 1 to 4, and the test results are shown in table 1.
TABLE 1 mechanical properties at room temperature of titanium particle reinforced Mg-based composites
| Examples | Yield strength (MPa) | Tensile strength (MPa) | Elongation (%) |
| Example 1 | 235 | 302 | 21.2 |
| Example 2 | 247 | 315 | 21.3 |
| Example 3 | 238 | 298 | 18.4 |
| Example 4 | 245 | 327 | 20.4 |
| Commercial AZ31B | 190～220 | 240～270 | 12～16 |
From the test results in table 1, it can be seen that the titanium particle reinforced magnesium matrix composite prepared by the method of the present invention in examples 1 to 4 has good yield strength, tensile strength and elongation, wherein the yield strength is greater than or equal to 235MPa, the tensile strength is greater than or equal to 298MPa, and the elongation exceeds 18%. Therefore, the preparation method of the invention can improve the dispersing performance of the titanium particles in the magnesium-based composite material, and simultaneously improve the tensile strength and the elongation of the prepared titanium particle reinforced magnesium-based composite material.
Similarly, in the methods for preparing the titanium particle preforms of examples 1 and 2, the particle size of the titanium particles may be selected within a range of 70nm to 50 μm, the particle size of the magnesium chips may be selected within a range of 50 to 100 μm, and the mass ratio of the titanium particles to the magnesium chips may be 1:1 to 1: 5; in the preparation process, the ball-material ratio is 5-10: 1, the ball milling time can be 60-120 min, the pressure of cold press molding can be 100-200 MPa, and the pressure maintaining time can be 0.5-2 min. In the method for preparing the laminated layers of aluminum foil-coated titanium particles of examples 3 and 4, the titanium particles may have a particle size of 70nm to 50 μm, the aluminum foil may have a thickness of 0.01 to 0.02mm and a width of 200 to 300mm, and the titanium powder spread on the aluminum foil may have a thickness of 0.2 to 0.5mm, without affecting the effect of preparing the metal titanium particle reinforced magnesium matrix composite. In addition, in the preparation process, the mass ratio of the titanium particles to the magnesium melt in the titanium particle preform or the titanium particle lamination coated by the aluminum foil can be selected from the range of 1: 999-100: 900, the extrusion temperature can be 300-350 ℃, the extrusion ratio can be 10-25: 1, and the extrusion speed can be 0.5-1 m/s. Through performance tests, the metal titanium particle reinforced magnesium matrix composite material prepared under the conditions has the performance of the product in the embodiment 1-4.
In conclusion, the invention discloses a preparation method of a metal titanium particle reinforced magnesium-based composite material, which adds titanium particles into a magnesium melt in a titanium particle prefabricated body or aluminum foil coated titanium particle laminated mode, and can avoid burning loss of the titanium particles in the adding process; the preparation method can effectively disperse titanium particles by applying mechanical stirring and ultrasonic treatment to the magnesium-based composite material melt added with the prefabricated body; in addition, the preparation method can rapidly cool the magnesium-based composite material melt after ultrasonic treatment, so that the sedimentation of titanium particles can be avoided. The titanium particles can be further dispersed by hot extrusion of the as-cast titanium particle reinforced magnesium-based composite material, and the titanium particles can prevent the size of the dynamic recrystallization grains from growing in the hot extrusion deformation process, so that the mechanical property of the composite material is improved; the titanium particles can weaken the basal plane texture of the composite material, and the plasticity of the composite material is effectively improved. Compared with a matrix alloy, the magnesium-based composite material prepared by the invention has higher strength and plasticity, wherein the yield strength can reach more than or equal to 235MPa, the tensile strength is more than or equal to 298MPa, and the elongation rate exceeds 18%.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (10)
1. The preparation method of the metal titanium particle reinforced magnesium matrix composite is characterized by comprising the following steps:
(1) stirring, casting and forming: adding a titanium particle prefabricated body or a titanium particle laminated layer coated by an aluminum foil into a magnesium melt, preserving heat for 5-10 min, cooling to form a semi-solid magnesium melt, stirring for 5-20 min, heating to form a liquid magnesium melt, performing ultrasonic treatment, and cooling by water to obtain an as-cast titanium particle reinforced magnesium-based composite material;
(2) and (3) hot extrusion molding of the composite material: preheating the as-cast titanium particle reinforced magnesium matrix composite material in the step (1) and then extruding to obtain the metal titanium particle reinforced magnesium matrix composite material.
2. The production method according to claim 1, wherein the titanium particle preform in the step (1) is produced as follows: and carrying out mechanical ball milling on the titanium particles and the magnesium chips under the protection of argon to obtain mixed powder of the titanium particles and the magnesium chips, and carrying out cold press molding.
3. The preparation method according to claim 2, wherein the particle size of the titanium particles is 70nm to 50 μm, the particle size of the magnesium chips is 50 to 100 μm, and the mass ratio of the titanium particles to the magnesium chips is 1:1 to 1: 5;
the specific conditions of the mechanical ball milling are as follows: stainless steel balls with the diameter of 5mm are used as grinding balls, the ball-material ratio is 5-10: 1, the rotating speed during ball milling is 80rmp, and the ball milling time is 60-120 min.
4. The preparation method according to claim 2, wherein the cold press molding is carried out by the following specific method: and (3) carrying out cold press molding under the pressure of 100-200 MPa and under the pressure maintaining condition for 0.5-2 min to obtain a prefabricated body of the pre-dispersed titanium carbide particles.
5. The method according to claim 1, wherein the aluminum foil-coated titanium particle laminate in step (1) is prepared by: the titanium particles with the particle size of 70 nm-50 mu m are evenly paved on an aluminum foil and then are folded into a slender strip.
6. The manufacturing method according to claim 5, wherein the aluminum foil has a thickness of 0.01 to 0.02mm and a width of 200 to 300mm, and the titanium particles laid on the aluminum foil have a thickness of 0.2 to 0.5 mm.
7. The preparation method according to claim 1, wherein the temperature for forming the liquid magnesium melt in the step (1) is 660-750 ℃, the temperature for forming the semi-solid magnesium melt is 600-630 ℃, the ultrasonic treatment time is 5-20 min, and the ultrasonic treatment power is 500-2000W.
8. The preparation method according to claim 1, wherein the mass ratio of the titanium particles to the magnesium melt in the titanium particle preform or the aluminum foil-coated titanium particle laminate in step (1) is 1: 999-100: 900.
9. The method according to claim 1, wherein the extrusion temperature in the step (2) is 300 to 350 ℃, the extrusion ratio is 10 to 25:1, and the extrusion rate is 0.5 to 1 m/s.
10. The magnesium-based composite material reinforced by the metal titanium particles prepared by the preparation method according to any one of claims 1 to 9.
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| CN115074560A (en) * | 2022-06-30 | 2022-09-20 | 广东省科学院新材料研究所 | Titanium particle reinforced magnesium-based composite material and preparation method thereof |
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| WO2023231419A1 (en) * | 2022-05-30 | 2023-12-07 | 广东省科学院新材料研究所 | Titanium particle reinforced magnesium-based composite material and preparation method therefor |
| CN115074560A (en) * | 2022-06-30 | 2022-09-20 | 广东省科学院新材料研究所 | Titanium particle reinforced magnesium-based composite material and preparation method thereof |
| CN115074560B (en) * | 2022-06-30 | 2023-03-14 | 广东省科学院新材料研究所 | Titanium particle reinforced magnesium matrix composite material and preparation method thereof |
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